After doing a little research, vinegar and water, 1 to 5 solution works, as does, salt, and for extra santizing, hydrogen peroxide, 1 to 1 or bleach and water 1 to 5, can also be used.

Thanks for that info Selkie. I do spray my cutting boards with bleach/water (1T/16oz) periodically. I keep a spray bottle of the bleach/water under my sink and every so often I spray my sink, sponges, dish drainer, etc.